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(No Model.) H E WAITE TELEPHONE.

No. 360,068. Patented Mar. 29, 1887.

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Z'nrreniazt UNITE STATES ATENT FFICE.

HENRY E. \VAITE, OF NE? YORK, N. Y., ASSIGNOR TO CHARLES F. LIVER- MORE, TRUSTEE, OF SAME PLACE.

TELEPHCNE.

SPECIFICATION forming part of Letters Patent No. 360,068, dated March 29, 1887.

Application filed January 26, 1856. Serial No. 189,829. (No model.)

To all whom it may concern:

Be it known that I, HENRY E. Wanna citizen of the United States, and a resident of the city, county, and State of New York, have in- Vented a new and useful Improvement in Telephones, of which the following is a specificatwo.

My invention relates to magneto-telephones; and it consists in a telephone constructed substantially as set forth hereinafter.

In the accompanying drawing the figure shows a cross-sectional view of a telephone embodying my invention.

The case A may be of any convenient form [5 to suit the taste and convenience of the user.

That shown consists of a simple box with the usual mouth or ear piece. 13, having the terminal binding-screws attached at one end. This is a simple and convenient form, that can be cheaply made, and at the same time it serves the purpose desired.

. Supported. in the usual manner in the case is a diaphragm, D, preferably of some mag netic material, or having some magnetic material connected with it at or near the center if made of other material.

Attached to the case in any desirable manner, as by screws 0, is a magnet, 0, preferably in the form of a horseshoe, and so arranged that one pole of the magnet is substantially underneath the center of the diaphragm.

Passing through this pole of the magnet is a rod or block of soft iron, E, which may be adjusted to and from the diaphragm and secured by a. screw, 6. \Vhen the diaphragm is of magnetic material, or has magnetic material connected with it, the rod or block may be adj usted in proper relations to operate the diaphragm by induction.

If the diaphragm is made of a nonmagnetic material, as a soundingboard, the rod or block may be adjusted in contact therewith, so that the vibration of the magnet, and even of the case itself, will operate the sounding-board to 5 produce the desired effect. In some instances the diaphragm may be dispensed with entirely, and the vibrations of the case will produce the necessary air-vibrations.

Upon the other end or pole of the magnet is secured a soft-iron core-piece, F, formed as a U screw at one end, so as to be adjustable, and upon this core is placed a coil or helix, G, of fine insulated wire, which is connected to and forms part of the line-circuit through the medium of the bindingscrews 1 2. The core F is made so as to project into the helix only a portion of its thickness, and the core E is of such proportions that it extends into the upper part of the helix, as clearly shown in the drawing. The magnet C is preferably a permanent magnet, though it may be of soft iron and he polarized by induction.

By this construction it will be seen that the core of the helix does not act directly upon the diaphragm; but the latter is affected by the bar or piece E, and this piece may be adjusted so as to regulate its relations to the diaphragm and the helix, and the core F may be adjusted in the helix with relation to the piece E so that the best results may be obtained.

\Vhat I claim is 1. The combination, in a telephoue,of a case supporting the sounding-board or diaphragm, a rigid magnet secured to the case and having perforated poles, in one of which is secured a soft-iron piece, E, and in the other is secured a soft-iron core carrying a helix, the piece and core being adjustable with relation to themselves and the diaphragm, substantially as described.

2. The combination, in a telephone, of the sounding-board or diaphragm, a magnet having perforated poles, to one of which is socured the short adjustable core, having the line-helix secured thereon, and the other pole carrying the adjustable piece of soft iron, the end of which enters the coil opposite the corepiece, and is adjustable with relation to the diaphragm, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HENRY \VAITE.

Vitnesses:

O. SPARimN, War. II. WooDHULL. 

